Fibrous material-containing composite
First Claim
1. A composite comprised of a ceramic matrix and at least a layer of filaments embedded in said matrix, said layer of filaments comprising at least about 10% by volume of said composite, each said filament having a diameter of at least about 50 microns and a length at least ten times its diameter, more than 99% by volume of said filaments being spaced from each other and being at least substantially parallel to each other, said matrix having a thermal expansion coefficient which ranges from lower than that of said filaments to less than about 15% higher than that of said filaments, said matrix being continuous and interconnecting, said composite having a porosity of less than about 5% by volume.
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Accused Products
Abstract
A composite is produced by admixing a matrix-forming material with organic binding material, forming the resulting mixture into a tape, disposing a layer of fibrous material between at least two of the tapes to form a layered structure, laminating the layered structure, heating the layered structure to remove organic binding material and hot pressing the resulting porous structure to form a composite containing a layer of fibrous material.
52 Citations
19 Claims
- 1. A composite comprised of a ceramic matrix and at least a layer of filaments embedded in said matrix, said layer of filaments comprising at least about 10% by volume of said composite, each said filament having a diameter of at least about 50 microns and a length at least ten times its diameter, more than 99% by volume of said filaments being spaced from each other and being at least substantially parallel to each other, said matrix having a thermal expansion coefficient which ranges from lower than that of said filaments to less than about 15% higher than that of said filaments, said matrix being continuous and interconnecting, said composite having a porosity of less than about 5% by volume.
- 9. A composite comprised of a ceramic matrix and a plurality of layers of filaments embedded in said matrix, more than 99% by volume of the filaments in each layer being spaced from each other and substantially parallel to each other, said layers of filaments being separated from each other by said matrix, each said filament having a diameter of at least about 50 microns and a length at least about ten times its diameter, said matrix having a thermal expansion coefficient which ranges from lower than that of said filaments to less than about 15% higher than that of said filaments, said matrix being continuous and interconnecting, said composite having a porosity of less than about 5% by volume.
Specification